A rust removal device and method for cargo hold ribs

Abstract

This invention provides a rust removal device and method for cargo hold ribs, including a traveling drive mechanism, a traveling support mechanism, and a nozzle assembly. The nozzle assembly is mounted on the traveling support mechanism, which is connected to the traveling drive mechanism. The nozzle assembly includes a nozzle body and a rotating body. The nozzle body has at least two spray surfaces arranged at an angle, and several nozzles are arranged on the spray surfaces. The nozzle body has several nozzle channels that communicate with the nozzles for spraying water. The nozzle body is located at the end of the rotating body. In this invention, the nozzle body has at least two spray surfaces arranged at an angle. When the nozzle body removes rust, multiple spray surfaces can simultaneously impact and remove rust from the transverse and longitudinal surfaces of the cargo hold ribs, reducing costs compared to the use of multiple independent nozzles in the prior art.

Description

Technical Field

[0001] This invention relates to the field of rust removal equipment and technology for cargo hold ribs, and in particular to a rust removal device and method for cargo hold ribs. Background Technology

[0002] Cargo hold ribs are an important component of a ship's structure, bearing the weight and providing support for the hull. If the cargo hold ribs are not made of robust profiles, it will lead to insufficient hull strength, making the ship prone to damage and leaks, thus threatening its safety and stability.

[0003] Cargo hold ribs are installed vertically upwards along the inner side of the cargo ship's bulkhead. Due to the marine environment, these ribs are prone to rusting, necessitating regular rust removal. Because the cargo hold ribs have a T-shaped structure with perpendicular transverse and longitudinal surfaces, conventional rust removal equipment can only remove rust from one side of the rib, failing to simultaneously remove rust from both transverse and longitudinal surfaces, resulting in low rust removal efficiency.

[0004] To address the aforementioned problems, prior art publication CN 220548134 U discloses an ultra-high pressure water rust removal device for cargo hold ribs of bulk carriers. This device includes a frame with connecting rods. First spray guns are mounted on both sides of the frame, with an adjustable distance between them. The nozzles of the first spray guns correspond to the side of the rib facing the bulkhead. During rust removal, the connecting rods are fixed to a lifting device, positioning the frame between the ribs. The distance between the first spray guns is then adjusted so that the first spray guns on both sides of the frame are close to the side of the rib facing the bulkhead, enabling rapid and effective rust removal on this side. Additionally, a second spray gun is obliquely mounted on the mounting plate. This second spray gun is used to remove rust from the contact area between the longitudinal and transverse surfaces of the rib, achieving good rust removal results.

[0005] While the aforementioned patent documents have achieved rust removal from cargo hold ribs to some extent and improved work efficiency, they still have the following drawbacks:

[0006] 1. The aforementioned patent documents use multiple independent nozzles, each of which removes rust from different areas, resulting in higher costs.

[0007] 2. The multiple independent nozzles in the aforementioned patent documents exhibit edge effects within their spraying areas. The closer the spraying effect is to the edge of the spraying area, the worse the rust removal effect, resulting in poor consistency in rust removal on the cargo hold ribs. Furthermore, due to the presence of multiple independent nozzles, the spraying areas of these nozzles overlap to ensure full coverage of the cargo hold ribs, leading to over-rust removal and wasted energy.

[0008] The aforementioned patent documents employ multiple independent nozzles, which are fixed nozzles. The maximum water pressure range that fixed nozzles can provide is 1500 bar to 2000 bar. The water jet impact efficiency is low, the rust removal effect is poor, and there are cases where rust cannot be removed in one go, requiring secondary manual rework, which reduces efficiency and increases labor intensity. Summary of the Invention

[0009] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a rust removal device and rust removal method for cargo hold ribs, so as to solve the problems existing in the prior art.

[0010] To achieve the above objectives, the present invention provides a rust removal device for cargo hold ribs, comprising a traveling drive mechanism, a traveling support mechanism, and a nozzle assembly. The nozzle assembly is mounted on the traveling support mechanism, which is connected to the traveling drive mechanism. The nozzle assembly includes a nozzle body and a rotating body. The nozzle body has at least two spraying surfaces arranged at an angle, and a plurality of nozzles are provided on the spraying surfaces. The nozzle body has a plurality of nozzle flow channels, which communicate with the nozzles for spraying water. The nozzle body is located at the end of the rotating body. When the rust removal device for cargo hold ribs is in operation, the rotating body drives the nozzle body to rotate, and water is sprayed out from the spraying surfaces through the nozzle flow channels and nozzles. The plurality of spraying surfaces strike and remove rust from the cargo hold ribs during rotation. The traveling drive mechanism drives the traveling support mechanism to move along the extension direction of the cargo hold ribs, continuously removing rust from the cargo hold ribs.

[0011] Preferably, the traveling support mechanism includes a support beam, support beam rollers, and a support drive assembly. The support beam is rotatably connected to the cargo hold rib via the support beam rollers, and the support beam is connected to the traveling drive mechanism. The support drive assembly includes a lateral movable component, a lateral drive source, and a lateral positioning component. The lateral movable component is slidably mounted on the support beam via the lateral drive source. The lateral positioning component is used to position the nozzle assembly in the lateral direction for spraying. The nozzle assembly includes a first nozzle component, which is mounted on the lateral movable component and moves closer to or further away from the cargo hold rib following the lateral movable component. The spray nozzle of the first nozzle component is inclined and used to strike and remove rust from the lateral and longitudinal surfaces of the cargo hold rib.

[0012] Preferably, the support drive assembly further includes a longitudinal fixed member, a longitudinal movable member, a longitudinal drive source, and a longitudinal positioning roller. The end of the longitudinal fixed member is fixedly connected to the transverse movable member. The longitudinal movable member is connected to the longitudinal fixed member through the longitudinal drive source. The longitudinal positioning roller is disposed at the end of the longitudinal movable member for positioning the spray position of the nozzle assembly in the longitudinal direction. The nozzle assembly further includes a second nozzle component, which is disposed on the longitudinal movable member and moves closer to or away from the cargo hold wall panel along with the longitudinal movable member. The spray nozzle of the second nozzle component is inclined and is used to strike and remove rust from the longitudinal surface of the cargo hold ribs and the surface of the cargo hold wall panel.

[0013] Preferably, the lateral positioning component includes a lateral positioning rod and a lateral positioning wheel. The lateral positioning wheel is disposed at one end of the lateral positioning rod, and the other end of the lateral positioning rod is connected to a longitudinal movable component or a lateral movable component. When the lateral positioning wheel contacts the longitudinal surface of the cargo hold rib, the distance between the first nozzle component, the second nozzle component and the longitudinal surface of the cargo hold rib is suitable for rust removal by impact.

[0014] Preferably, both the longitudinal drive source and the lateral drive source are hydraulic cylinders or pneumatic cylinders.

[0015] Preferably, the first nozzle and the second nozzle are arranged in a staggered manner in the vertical direction to reduce the spatial volume of the support drive assembly.

[0016] Preferably, two sets of support drive components and two sets of nozzle components are provided and symmetrically arranged on the support beam; when the cargo hold rib rust removal device is in operation, the two sets of support drive components and the two sets of nozzle components are located on both sides of the same cargo hold rib.

[0017] Preferably, the nozzle body has a nozzle inlet, the end of the rotating body is connected to the nozzle inlet, and the rotating body has a flow channel communicating with the nozzle inlet; the nozzle inlet is connected to several nozzles through several nozzle flow channels, and the several nozzle flow channels have an angle with the center line of the nozzle body.

[0018] To achieve the above or other objectives, the present invention also discloses a method for removing rust from cargo hold ribs, using the aforementioned rust removal device for cargo hold ribs, and comprising the following steps:

[0019] The walking drive mechanism is activated, driving the walking support mechanism to move to the cargo hold rib.

[0020] The walking support mechanism adjusts the position of the nozzle assembly, so that the nozzle assembly moves to the rust removal area of ​​the cargo hold rib.

[0021] The nozzle assembly operates by striking and removing rust from the rust-removing areas of the cargo hold ribs.

[0022] Preferably, the walking support mechanism includes a support beam and a support drive assembly. The support drive assembly includes a lateral movable component, a lateral drive source, a lateral positioning component, a longitudinal fixing component, a longitudinal movable component, a longitudinal drive source, and a longitudinal positioning roller. The nozzle assembly includes a first nozzle component disposed on the lateral movable component and a second nozzle component disposed on the longitudinal movable component. The steps are as follows:

[0023] When the lateral drive source is activated, it drives the lateral movable part to move along the support beam. The first nozzle follows the lateral movable part. The lateral positioning part positions the first nozzle in the lateral direction. When the first nozzle is activated, it strikes the lateral and longitudinal surfaces of the cargo hold ribs to remove rust.

[0024] After the lateral positioning component positions the first nozzle component in the lateral direction, the longitudinal drive source operates, driving the longitudinal movable component to move relative to the longitudinal fixed component, and the second nozzle component moves with the longitudinal movable component; when the longitudinal positioning roller contacts the cargo hold wall panel, the second nozzle component's lateral and longitudinal spraying position is positioned, and the second nozzle component operates to strike and remove rust from the longitudinal surface of the cargo hold ribs and the surface of the cargo hold wall panel.

[0025] Preferably, the support drive assembly and the nozzle assembly are provided in two sets and symmetrically arranged on the support beam; when the cargo hold rib rust removal device is in operation, the two sets of support drive assemblies and the two sets of nozzle assemblies are located on both sides of the same cargo hold rib, and rust is removed simultaneously on both sides of the same cargo hold rib.

[0026] As described above, the rust removal device and method for cargo hold ribs of the present invention have the following beneficial effects:

[0027] 1. The rust removal device and method for cargo hold ribs of the present invention have at least two spraying surfaces arranged at an angle. When the spraying head removes rust, multiple spraying surfaces can simultaneously strike and remove rust from the transverse and longitudinal surfaces of the cargo hold ribs. Compared with the use of multiple independent spraying heads in the prior art, the cost is reduced.

[0028] 2. The rust removal device and method for cargo hold ribs involved in this invention are equipped with a rotating body, which can assist the rotation of the nozzle body. Compared with the maximum water pressure range that a fixed nozzle can provide in the prior art, the maximum water pressure that a rotating nozzle can provide can reach 2800 bar, and the spraying effect is 4-5 times better than that of a fixed nozzle, resulting in better rust removal. Attached Figure Description

[0029] Figure 1 This is a top view of the cargo hold rib rust removal device of the present invention during the impact rust removal process on the cargo hold ribs;

[0030] Figure 2 This is a first-angle spatial schematic diagram of the rust removal device for cargo hold ribs involved in the present invention.

[0031] Figure 3 yes Figure 2 Side view along the AA direction (excluding supporting beam rollers and telescopic mechanism).

[0032] Figure 4 This is a spatial schematic diagram of the nozzle assembly in the rust removal device for cargo hold ribs involved in this invention;

[0033] Figure 5 This is a spatial schematic diagram of the nozzle body in the rust removal device for cargo hold ribs involved in this invention;

[0034] Figure 6 This is a schematic diagram of the internal structure of the nozzle body in the rust removal device for cargo hold ribs of the present invention;

[0035] Figure 7 This is a spatial schematic diagram of the rotating body in the cargo hold rib rust removal device of the present invention.

[0036] Figure 8 This is a schematic diagram of the internal structure of the rotating body in the cargo hold rib rust removal device of the present invention.

[0037] Figure 9 This is a spatial schematic diagram of the sealing end cap of the rotating body in the rust removal device for cargo hold ribs of the present invention.

[0038] Figure 10 This is a spatial schematic diagram of the main shaft of the rotating body in the rust removal device for cargo hold ribs of the present invention.

[0039] Figure 11 This is a spatial schematic diagram of the bushing of the rotating body in the rust removal device for cargo hold ribs of the present invention.

[0040] Figure 12 This is a schematic diagram of the internal structure of the bushing of the rotating body in the rust removal device for cargo hold ribs of the present invention.

[0041] Figure 13 This is a spatial schematic diagram of the central needle of the rotating body in the rust removal device for cargo hold ribs of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Support beam; 2. Lateral drive source; 3. Lateral moving part; 4. Support beam roller; 5. Longitudinal fixed part; 6. Longitudinal moving part; 7. Longitudinal drive source; 8. Nozzle assembly; 81. First nozzle assembly; 82. Second nozzle assembly; 83. Nozzle body; 830. Nozzle inlet; 831. First spray surface; 832. Second spray surface; 833. Third spray surface; 834. Nozzle flow channel; 835. Nozzle; 836. Internal thread; 837. Nozzle body connection hole; 838. Nozzle cover; 8380. Cover through hole; 84. Leakage shield; 841. Leakage shield roller; 85. Rotating body; 850. Angular contact bearing; 851. Housing; 852. Sealing end cap; 8520. End cap protrusion; 8521. Inlet pipe connection end; 8522. End cap inlet; 8 523. Raised mounting groove; 8524. Pressure relief cavity; 8525. Pressure relief flow channel; 8526. Raised sealing groove; 853. Main shaft; 8530. Main shaft flow channel; 854. Bushing; 8540. Bushing through hole; 8541. Sealing O-ring; 8542. Sealing pressure sleeve; 8543. Bushing sealing groove; 8544. Annular groove; 855. Center pin; 8550. Center pin flow channel; 8551. Outer circle protrusion; 856. Hollow lock nut; 857. Deep groove ball bearing; 858. Reduction assembly; 8580. Reduction fixing component; 8581. Reduction rotating component; 859. Ball bearing; 9. Lateral positioning rod; 10. Lateral positioning wheel; 11. Longitudinal positioning roller; 12. Cargo hold rib; 121. Lateral surface; 122. Longitudinal surface; 13. Cargo hold wall panel; 14. Telescopic mechanism. Detailed Implementation

[0044] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0045] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0046] This invention provides a rust removal device for cargo hold ribs. For ease of description, the length direction of the supporting beam 1 is defined as the left-right direction, the width direction as the front-back direction, and the height direction as the up-down direction. Figure 1 In the diagram, the left and right directions of the paper are left and right respectively, the top and bottom directions of the paper are back and front respectively, and the front and back of the paper are top and bottom respectively.

[0047] like Figures 1-13 As shown, the present invention provides a rust removal device for cargo hold ribs, including a traveling drive mechanism, a traveling support mechanism, and a nozzle assembly 8. The nozzle assembly 8 is mounted on the traveling support mechanism, which is connected to the traveling drive mechanism. The nozzle assembly 8 includes a nozzle body 83 and a rotating body 85. The nozzle body 83 has at least two spraying surfaces arranged at an angle, and a plurality of nozzles 835 are provided on the spraying surfaces. A plurality of nozzle flow channels 834 are provided in the nozzle body 83, which are connected to the nozzles 835 for spraying water. The nozzle body 83 is located at the end of the rotating body 85. When the rust removal device for cargo hold ribs is working, the rotating body 85 drives the nozzle body 83 to rotate, and water is sprayed out from the spraying surfaces through the nozzle flow channels 834 and the nozzles 835. The plurality of spraying surfaces strike and remove rust from the cargo hold ribs 12 during the rotation process. The traveling drive mechanism drives the traveling support mechanism to move along the extension direction of the cargo hold ribs 12 to continuously remove rust from the cargo hold ribs 12.

[0048] The rust removal device for cargo hold ribs of the present invention has a nozzle body 83 with several spraying surfaces arranged at an angle. During rust removal, the nozzle body 83 rotates and water is sprayed out from the nozzles 835 of the spraying surfaces, simultaneously striking and removing rust from the transverse surface 121 and the longitudinal surface 122 of the cargo hold rib 12. Compared with the prior art that uses multiple fixed nozzles, this device effectively reduces costs.

[0049] Preferred, such as Figures 1-3 As shown, the traveling support mechanism includes a support beam 1, support beam rollers 4, and a support drive assembly. The support beam 1 is rotatably connected to the cargo hold rib 12 via the support beam rollers 4, and the support beam 1 is connected to the traveling drive mechanism via a telescopic mechanism 14. The support drive assembly includes a lateral movable part 3, a lateral drive source 2, and a lateral positioning part. The lateral movable part 3 is slidably mounted on the support beam 1 via the lateral drive source 2. The lateral positioning part is used to position the nozzle assembly 8 in the lateral direction. The nozzle assembly 8 includes a first nozzle part 81, which is mounted on the lateral movable part 3 and moves closer to or further away from the cargo hold rib 12 following the lateral movable part 3. The nozzle of the first nozzle part 81 is inclined and used to strike and remove rust from the lateral surface 121 and longitudinal surface 122 of the cargo hold rib 12.

[0050] Preferred, such as Figures 1-3As shown, the support drive assembly also includes a longitudinal fixing member 5, a longitudinal movable member 6, a longitudinal drive source 7, and a longitudinal positioning roller 11. The front end of the longitudinal fixing member 5 is fixedly connected to the transverse movable member 3. The longitudinal movable member 6 is connected to the longitudinal fixing member 5 through the longitudinal drive source 7. The longitudinal positioning roller 11 is located at the rear end of the longitudinal movable member 6 to position the spray position of the nozzle assembly 8 in the longitudinal direction. The nozzle assembly 8 also includes a second nozzle member 82, which is located on the longitudinal movable member 6 and moves closer to or further away from the cargo hold wall panel 13 along with the longitudinal movable member 6. The spray nozzle of the second nozzle member 82 is inclined and is used to strike and remove rust from the longitudinal surface 122 of the cargo hold rib 12 and the surface of the cargo hold wall panel 13.

[0051] Preferred, such as Figures 1-3 As shown, the lateral positioning component includes a lateral positioning rod 9 and a lateral positioning wheel 10. The lateral positioning wheel 10 is located at the end of the lateral positioning rod 9, and the other end of the lateral positioning rod 9 is connected to the longitudinal movable component 6 or the lateral movable component 3. When the lateral positioning wheel 10 contacts the longitudinal surface 122 of the cargo hold rib plate 12, the distance between the first nozzle component 81, the second nozzle component 82 and the longitudinal surface 122 of the cargo hold rib plate 12 is suitable for rust removal by impact.

[0052] In this embodiment, as Figures 1-3 As shown, the first nozzle 81 is mounted on the transverse movable member 3, and the second nozzle 82 is mounted on the longitudinal movable member 6. The longitudinal movable member 6 is connected to the longitudinal fixed member 5, and the longitudinal fixed member 5 is fixedly connected to the transverse movable member 3. Therefore, when the transverse movable member 3 moves left and right on the supporting beam 1, the first nozzle 81 and the second nozzle 82 will move with the transverse movable member 3. When the transverse positioning wheel 10 contacts the longitudinal surface 122 of the cargo hold rib plate 12, the distance between the first nozzle 81, the second nozzle 82 and the longitudinal surface 122 of the cargo hold rib plate 12 is suitable for rust removal by impact, which means that the positioning of the first nozzle 81 and the second nozzle 82 in the left and right directions is achieved.

[0053] Correspondingly, the second nozzle 82 is mounted on the longitudinal movable member 6, which is connected to the longitudinal fixed member 5. The longitudinal fixed member 5 and the longitudinal movable member 6 are connected by a longitudinal drive source 7. Therefore, when the longitudinal movable member 6 moves back and forth in the longitudinal fixed member 5, the second nozzle 82 and the longitudinal positioning roller 11 move back and forth with the longitudinal movable member 6. When the longitudinal positioning roller 11 contacts the cargo hold wall panel 13, the distance between the second nozzle 82 and the cargo hold wall panel 13 is suitable for rust removal by impact, which means that the positioning of the second nozzle 82 in the front and rear directions is achieved.

[0054] In addition, since the first nozzle component 81 is directly installed on the transverse movable part 3, it is not possible to directly adjust the first nozzle component 81 in the front-back direction. Therefore, an upper nozzle connecting rod is set between the first nozzle component 81 and the transverse movable part 3. By controlling the size of the upper nozzle connecting rod, the distance between the first nozzle component 81 and the transverse surface 121 of the cargo hold rib plate 12 is suitable for rust removal by impact, which also realizes the positioning of the first nozzle component 81 in the front-back direction.

[0055] Preferred, such as Figure 1 As shown, both the longitudinal drive source 7 and the transverse drive source 2 are hydraulic cylinders or pneumatic cylinders. In this embodiment, the fixed end of the longitudinal drive source 7 is mounted on the longitudinal fixed member 5, and the piston end of the longitudinal drive source 7 is mounted on the longitudinal movable member 6. The movement between the longitudinal movable member 6 and the longitudinal fixed member 5 is achieved by the extension and retraction of the piston end in the longitudinal drive source 7. The fixed end of the transverse drive source 2 is mounted on the supporting beam 1, and the piston end of the transverse drive source 2 is mounted on the transverse movable member 3. The movement between the transverse movable member 3 and the supporting beam 1 is achieved by the extension and retraction of the piston end in the transverse drive source 2. In other embodiments, the longitudinal drive source 7 and the transverse drive source 2 can be replaced by other drive sources, such as linear motors.

[0056] Preferred, such as Figure 3 As shown, the first nozzle component 81 and the second nozzle component 82 are arranged in a staggered manner in the vertical direction, which reduces the spatial volume of the support and drive assembly and avoids interference between the water inlet pipes connected to the first nozzle component 81 and the second nozzle component 82, thus preventing them from occupying too much space. In this way, the staggered arrangement of the first nozzle component 81 and the second nozzle component 82 in the vertical direction effectively reduces the spatial volume of the support and drive assembly.

[0057] Preferred, such as Figure 1 , Figure 2 As shown, the support drive assembly and the nozzle assembly 8 are each provided in two sets and are symmetrically arranged on the support beam 1; when the cargo hold rib plate rust removal device is in operation, the two sets of support drive assemblies and the two sets of nozzle assemblies 8 are located on both sides of the same cargo hold rib plate 12.

[0058] In this embodiment, there are two of each of the following components: lateral movable component 3, lateral drive source 2, longitudinal fixed component 5, longitudinal movable component 6, longitudinal drive source 7, longitudinal positioning roller 11, first nozzle component 81, and second nozzle component 82, which are respectively arranged on the left and right sides of the same cargo hold rib 12. There is one supporting beam 1. The number of the following components are also two: lateral movable component 3, lateral drive source 2, longitudinal fixed component 5, longitudinal movable component 6, longitudinal drive source 7, longitudinal positioning roller 11, first nozzle component 81, and second nozzle component 82. These components are symmetrically arranged on the left and right sides of the cargo hold rib 12. The first nozzle component 81 and the second nozzle component 82 simultaneously strike and remove rust from both sides of the cargo hold rib 12.

[0059] Preferred, such as Figures 4-6 As shown, a nozzle inlet 830 is provided in the nozzle body 83. The nozzle inlet 830 and several nozzles 835 are connected through several nozzle flow channels 834. The nozzle flow channels 834 are at an angle to the centerline of the nozzle body 83. Because the nozzle flow channels 834 are at an angle to the centerline of the nozzle body 83, when high-pressure water is ejected at high speed from the nozzles 835, according to Newton's third law, the high-pressure water will exert a reaction force opposite to the direction of injection. When the axis of the nozzles 835 does not pass through the centerline of the nozzle body 83, this reaction force will form a rotational torque, which drives the nozzle body 83 to rotate at high speed.

[0060] Furthermore, such as Figure 5 As shown, there are three spray surfaces: a first spray surface 831, a second spray surface 832, and a third spray surface 833. The first spray surface 831 is connected to the second spray surface 832 through the third spray surface 833, and the first spray surface 831 and the second spray surface 832 are symmetrically arranged on both sides of the third spray surface 833. The plane containing the first spray surface 831 is perpendicular to the plane containing the second spray surface 832. When the first nozzle 81 is working, one of the first spray surface 831 or the second spray surface 832 is in contact with the cargo. The transverse surface 121 of the cargo hold rib 12 is parallel to the other, and the longitudinal surface 122 of the cargo hold rib 12 is parallel to the other. The third spray surface 833 faces the intersection of the longitudinal surface 122 and the transverse surface 121 of the cargo hold rib 12. When the second nozzle 82 is working, one of the first spray surface 831 and the second spray surface 832 is parallel to the longitudinal surface 122 of the cargo hold rib 12, and the other is parallel to the surface of the cargo hold bulkhead 13. The third spray surface 833 faces the intersection of the longitudinal surface 122 of the cargo hold rib 12 and the surface of the cargo hold bulkhead 13.

[0061] Preferred, such as Figures 4-6 As shown, the nozzle body 83 also includes a nozzle cover 838, which is detachably connected to the nozzle body 83 and covers several spray surfaces; the nozzle cover 838 has several cover through holes 8380, which are aligned with the spray opening of the nozzle 835.

[0062] In this embodiment, a plurality of nozzle body connection holes 837 are provided on the adjacent side end faces of the spray surface on the nozzle body 83, and a plurality of outer cover connection holes are provided on the nozzle cover 838. The plurality of outer cover connection holes are aligned with the plurality of nozzle body connection holes 837, and fastening bolts or fastening screws are provided in both, so as to realize the detachable connection of the nozzle cover 838.

[0063] Furthermore, such as Figure 5 , Figure 6As shown, an internal thread 836 is provided on the inner wall of the end of the nozzle flow channel 834 away from the nozzle inlet 830, and an external thread is provided on the outer circumferential surface of the nozzle 835. The nozzle 835 is detachably connected to the nozzle flow channel 834 through the external thread and the internal thread 836. The nozzle cover 838 covers the spray surface, that is, the nozzle cover 838 covers the outside of the nozzle 835. On the one hand, it limits the nozzle 835 on the nozzle flow channel 834 to prevent the nozzle 835 from detaching from the nozzle flow channel 834 under the pressure of high-pressure water. On the other hand, the through hole 8380 of the cover is aligned with the spray port of the nozzle 835. The nozzle cover 838 can block the back impact force of high-pressure water on the outer circumferential surface of the nozzle 835, prevent the nozzle 835 from being damaged under long-term impact, and extend the service life of the nozzle 835.

[0064] Preferred, such as Figure 4 , Figures 7-13 As shown, the rotating body 85 includes a housing 851, a sealing end cap 852, a rotating assembly, a deceleration assembly 858, and several bearings. The sealing end cap 852 is disposed at the end of the housing 851, and the sealing end cap 852 and the interior of the housing 851 form a housing cavity. The rotating assembly is rotatably disposed in the housing cavity, and the rotating assembly passes through the end of the housing 851 away from the sealing end cap 852. The deceleration assembly 858 and several bearings are disposed between the outer peripheral surface of the rotating assembly and the inner wall surface of the housing cavity. The end of the rotating assembly away from the sealing end cap 852 is connected to the nozzle inlet 830, and a flow channel communicating with the nozzle inlet 830 is opened in the rotating assembly.

[0065] Furthermore, such as Figure 9 As shown in this embodiment, for ease of description of the internal structure of the nozzle assembly 8, as follows: Figure 8 In the middle, the left and right directions of the paper are the front and back directions, respectively. The sealing end cover 852 is provided with an end cover protrusion 8520 and a water inlet pipe connection end 8521. The end cover protrusion 8520 is located at the front end of the sealing end cover 852, and the water inlet pipe connection end 8521 is located at the rear end of the sealing end cover 852. The end cover protrusion 8520 is connected to the rear end of the housing 851, and the water inlet pipe connection end 8521 is connected to the water inlet pipe. A high-pressure pump set is connected to the water inlet pipe. A raised mounting groove 8523 is opened on the front end face of the end cover protrusion 8520. The sealing end cover 852 is provided with an end cover water inlet 8522, which passes through the water inlet pipe connection end 8521 and the end cover protrusion 8520 and communicates with the flow channel of the rotating component in the housing cavity. A raised sealing groove 8526 is also provided on the outer peripheral surface of the end cover protrusion 8520. A raised sealing ring is provided in the raised sealing groove 8526. The raised sealing groove 8526 and the raised sealing ring seal the end cover protrusion 8520 and the open end of the housing 851 in a sealed connection.

[0066] Preferred, such as Figure 8 , Figures 10-13 As shown, the rotating assembly includes a main shaft 853, a bushing 854, and a center pin 855. The center pin 855 has a center pin flow channel 8550. One end of the center pin 855 is connected to a sealing end cap 852. The end cap inlet 8522 on the sealing end cap 852 communicates with the center pin flow channel 8550. The main shaft 853 has a main shaft flow channel 8530. The bushing 854 is located on the outer periphery of the center pin 855 and in the main shaft flow channel 8530. The center pin flow channel 8550 communicates with the main shaft flow channel 8530. A hollow lock nut 856 is also provided in the main shaft flow channel 8530 for limiting the bushing 854.

[0067] Furthermore, in this embodiment, the sealing end cap 852 is provided with an end cap inlet 8522, and the outer circle of the rear end of the center needle 855 is provided with an outer circle protrusion 8551. The outer circle protrusion 8551 is disposed in the end cap inlet 8522. High-pressure water enters the center needle flow channel 8550 through the water inlet pipe connection end 8521 and the end cap inlet 8522. The high-pressure water applies a force to the outer circle protrusion 8551 to press the center needle 855 into the end cap inlet 8522, keeping the center needle 855 stationary in the bushing 854. The high-pressure water enters the main shaft flow channel 8530 from the center needle flow channel 8550, enters the nozzle flow channel 834 through the main shaft flow channel 8530, and is sprayed through the nozzle flow channel 834 and the nozzle 835.

[0068] Furthermore, such as Figure 8 , Figure 11 , Figure 12As shown, in this embodiment, the inner wall of the bushing 854 is also provided with a plurality of annular grooves 8544 in the circumferential direction, and the annular grooves 8544 and the outer peripheral surface of the center pin 855 form a pressure-holding cavity; each pressure-holding cavity is connected to at least one bushing through hole 8540. The sealing element employs a sealing sleeve 8542 and a sealing O-ring 8541, which are disposed in the bushing sealing groove 8543. The sealing sleeve 8542 and sealing O-ring 8541 serve two purposes: firstly, to connect the bushing 854 to the main shaft 853, allowing the bushing 854 to rotate synchronously with the main shaft 853; secondly, to prevent the flow of high-pressure water in the gap between the bushing 854 and the main shaft 853, thus forming a pressure-holding water channel. The water pressure in this channel almost completely compensates for the water pressure in the pressure-holding chamber. This effectively prevents the gap between the center needle 855 and the bushing 854, and the gap between the bushing 854 and the main shaft 853, from being impacted and expanded by the high-pressure water in the center needle flow channel 8550, avoiding a disproportionate increase in leakage as the fluid pressure increases, and effectively reducing the energy loss of the high-pressure water. The combined action of the pressure-holding water circuit and the pressure-holding chamber ensures the pressure stability of the high-pressure water in the main shaft flow channel 8530, preventing gap expansion and reducing energy loss.

[0069] When high-pressure water flows from the center needle channel 8550 into the main shaft channel 8530, it will inevitably enter the gaps between the bushing 854 and the center needle 855, and between the bushing 854 and the main shaft 853. The high-pressure water in the gap between the bushing 854 and the main shaft 853 is blocked by the sealing sleeve 8542 and the sealing O-ring 8541; the high-pressure water in the gap between the bushing 854 and the center needle 855 enters the pressure-holding cavity, filling it completely. Then, the high-pressure water passes through the bushing through hole 8540 into the gap between the bushing 854 and the main shaft 853, where it is blocked by the adjacent sealing sleeve 8542 and the sealing O-ring 8541, forming a pressure-holding water path. The pressure-holding chamber and the pressure-holding water circuit work together to prevent gap expansion and to prevent the leakage from increasing disproportionately with the increase of high-pressure water pressure. This effectively maintains the pressure of the high-pressure water, prevents the loss of water pressure in the main shaft flow channel 8530, and reduces energy loss.

[0070] Furthermore, such as Figure 8 , Figure 9As shown, in this embodiment, the sealing end cap 852 is provided with a pressure relief cavity 8524 and a pressure relief channel 8525. The gaps between the bushing 854 and the center pin 855, and between the bushing 854 and the main shaft 853, are connected to the pressure relief cavity 8524 and the pressure relief channel 8525. In this embodiment, the pressure relief cavity 8524 is axially disposed on the sealing end cap 852 and is connected to the protruding mounting groove 8523. The pressure relief channel 8525 is radially formed on the sealing end cap 852, and the pressure relief cavity 8524 is connected to the outside through the pressure relief channel 8525.

[0071] Preferred, such as Figure 8 As shown, the reduction assembly 858 includes a reduction fixing member 8580 and a reduction rotating member 8581. The reduction fixing member 8580 is disposed on the inner wall of the housing 851, and the reduction rotating member 8581 is disposed on the outer peripheral surface of the main shaft 853. The reduction fixing member 8580 and the reduction rotating member 8581 interact to reduce the speed of the rotating assembly. Several bearings are arranged along the axial direction of the rotating assembly to assist the rotation of the rotating assembly in the housing 851. The several bearings include two angular contact bearings 850, one ball bearing 859, and one deep groove ball bearing 857. The two angular contact bearings 850 are disposed at the front end of the housing cavity, the ball bearing 859 is disposed at the rear end of the angular contact bearings 850, the reduction assembly 858 is disposed at the rear end of the ball bearing 859, and the deep groove ball bearing 857 is disposed at the rear end of the reduction assembly 858.

[0072] Furthermore, such as Figure 4 As shown, the nozzle assembly 8 also includes a leak-proof cover 84, which is disposed on the housing 851 of the rotating body 85, and the nozzle body 83 is located in the leak-proof cover 84; a plurality of leak-proof cover rollers 841 are provided on the edge of the leak-proof cover 84.

[0073] In this embodiment, the leak-proof cover 84 is flared. When the first nozzle component 81 is working, the leak-proof cover 84 contacts the transverse surface 121 and longitudinal surface 122 of the cargo hold rib plate 12 through several leak-proof cover rollers 841. The leak-proof cover 84 prevents jet splashing after high-pressure water hits the cargo hold rib plate 12. Furthermore, the contact between the leak-proof cover rollers 841 and the transverse surface 121 and longitudinal surface 122 of the cargo hold rib plate 12 ensures a safe working distance between the nozzle body 83 and the cargo hold rib plate 12, preventing direct contact between the nozzle body 83 and the cargo hold rib plate 12 during operation and thus avoiding damage to the nozzle body 83. Correspondingly, the leak-proof cover 84 in the second nozzle component 82 has the same effect, which will not be repeated here.

[0074] To achieve the above or other objectives, the present invention also discloses a method for removing rust from cargo hold ribs, using the aforementioned rust removal device for cargo hold ribs, and comprising the following steps:

[0075] S1: The walking drive mechanism is working, and the walking drive mechanism drives the walking support mechanism to move to the cargo hold rib 12; the walking drive mechanism drives the walking support mechanism to the cargo hold rib 12, and activates the telescopic mechanism 14 between the support beam 1 and the walking drive mechanism, so that the support beam roller 4 contacts the cargo hold rib 12. At this time, the support beam 1 is slidably set on the front side of the cargo hold rib 12.

[0076] S2: The walking support mechanism adjusts the position of the nozzle assembly 8 so that the nozzle assembly 8 moves to the rust removal area of ​​the cargo hold rib plate 12; the lateral drive source 2 is activated, and the lateral drive source 2 drives the lateral movable part 3 to move along the support beam 1. The first nozzle part 81 and the second nozzle part 82 follow the lateral movable part 3. When the lateral positioning wheel 10 on the lateral positioning rod 9 contacts the longitudinal surface 122 of the cargo hold rib plate 12, the distance between the first nozzle part 81, the second nozzle part 82 and the longitudinal surface 122 of the cargo hold rib plate 12 is suitable for rust removal, thus realizing the positioning of the first nozzle part 81 and the second nozzle part 82 in the left and right directions. When the longitudinal drive source 7 is activated, the longitudinal drive source 7 drives the longitudinal movable part 6 to move back and forth in the longitudinal fixed part 5. The second nozzle part 82 and the longitudinal positioning roller 11 follow the longitudinal movable part 6 to move back and forth. When the longitudinal positioning roller 11 contacts the surface of the cargo hold wall panel 13, the distance between the second nozzle part 82 and the cargo hold wall panel 13 is suitable for rust removal by impact, which means that the positioning of the second nozzle part 82 in the front and rear directions is achieved.

[0077] S3: The nozzle assembly 8 operates to strike and remove rust from the rust-removing area of ​​the cargo hold rib plate 12; when the first nozzle component 81 and the second nozzle component 82 are in a suitable position for striking and removing rust, the water inlet pipe is connected to the water inlet pipe connection end 8521 of the sealing end cover 852, and the high-pressure water enters the central needle flow channel 8550 through the end cover water inlet 8522, then enters the main shaft flow channel 8530 from the central needle flow channel 8550, then enters the nozzle flow channel 834 from the main shaft flow channel 8530 along the nozzle water inlet 830, and then is sprayed out from several spray surfaces along the nozzle flow channel 834 and the nozzle 835. Because there is an angle between the nozzle flow channel 834 and the centerline of the nozzle body 83, the high-pressure water will generate a reaction force on the nozzle body 83, thereby driving the rotation of the nozzle body 83. The rotation of the nozzle body 83 drives the rotation of the main shaft 853. The deceleration assembly 858 decelerates the rotation of the main shaft 853, and several bearings assist the rotation of the main shaft 853. In the first nozzle component 81, several spray surfaces of the nozzle body 83 simultaneously strike and remove rust from the transverse surface 121 and the longitudinal surface 122 of the cargo hold rib plate 12. In the second nozzle component 82, several spray surfaces of the nozzle body 83 simultaneously strike and remove rust from the longitudinal surface 122 of the cargo hold rib plate 12 and the surface of the cargo hold wall plate 13.

[0078] When high-pressure water enters the main shaft channel 8530 from the center needle channel 8550, the high-pressure water will inevitably enter the gap between the bushing 854 and the center needle 855, and the gap between the bushing 854 and the main shaft 853. The high-pressure water in the gap between bushing 854 and main shaft 853 is blocked by sealing sleeve 8542 and sealing O-ring 8541; the high-pressure water in the gap between bushing 854 and center pin 855 enters the pressure-holding cavity, filling the pressure-holding cavity, and then the high-pressure water passes through bushing through hole 8540 into the gap between bushing 854 and main shaft 853, and is then blocked by adjacent sealing sleeve 8542 and sealing O-ring 8541, forming a pressure-holding water channel. The water pressure in the pressure-holding water channel is almost completely compensated with the water pressure in the pressure-holding cavity, avoiding the leakage from increasing disproportionately with the increase of fluid pressure, realizing the pressure stability of the high-pressure water in the main shaft flow channel 8530, and ensuring that the high-pressure water has a good rust removal effect on the transverse surface 121, longitudinal surface 122 of cargo hold rib plate 12 and the surface of cargo hold wall plate 13.

[0079] Then, when the pressure-holding water path and pressure-holding cavity are filled with high-pressure water, the high-pressure water flows into the pressure relief cavity 8524 through the gap between the hollow lock nut 856 and the main shaft 853, and through the gap between the hollow lock nut 856 and the center pin 855, and then flows out of the pressure relief cavity 8524 through the pressure relief flow channel 8525.

[0080] S4: Drive the walking support mechanism to move along the extension direction of the cargo hold rib 12 through the walking drive mechanism to continuously remove rust from the cargo hold rib 12.

[0081] Preferably, in steps S2-S4, two sets of support drive components and two sets of nozzle components 8 are provided and symmetrically arranged on the support beam 1. When the cargo hold rib rust removal device is in operation, the two sets of support drive components and the two sets of nozzle components 8 are located on both sides of the same cargo hold rib 12, and rust removal is performed on both sides of the same cargo hold rib 12 simultaneously, which effectively improves the rust removal efficiency and reduces the labor intensity.

[0082] The rust removal device and method for cargo hold ribs involved in this invention have a nozzle body 83 with at least two spraying surfaces arranged at an angle. When the nozzle body 83 removes rust, multiple spraying surfaces can simultaneously strike and remove rust from the transverse surface 121, longitudinal surface 122, and cargo hold wall panel 13 of the cargo hold rib 12. This reduces costs compared to the use of multiple independent nozzles in the prior art.

[0083] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0084] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rust removal device for cargo hold ribs, characterized in that: It includes a walking drive mechanism, a walking support mechanism and a nozzle assembly (8), wherein the nozzle assembly (8) is mounted on the walking support mechanism and the walking support mechanism is connected to the walking drive mechanism; The nozzle assembly (8) includes a nozzle body (83) and a rotating body (85). The nozzle body (83) has at least two spray surfaces arranged at an angle to each other. A plurality of nozzles (835) are provided on the spray surfaces. A plurality of nozzle channels (834) are provided in the nozzle body (83). The nozzle channels (834) are connected to the nozzles (835) and are used to spray water. The nozzle body (83) is located at the end of the rotating body (85). When the cargo hold rib plate rust removal device is working, the rotating body (85) drives the nozzle body (83) to rotate, and the water is sprayed out from the spraying surface through the nozzle flow channel (834) and nozzle (835). Several spraying surfaces hit the cargo hold rib plate (12) to remove rust during the rotation process. The walking drive mechanism drives the walking support mechanism to move along the extension direction of the cargo hold rib (12) to continuously remove rust from the cargo hold rib (12).

2. The rust removal device for cargo hold ribs according to claim 1, characterized in that: The walking support mechanism includes a support beam (1), a support beam roller (4) and a support drive assembly. The support beam (1) is tactilely connected to the cargo hold rib (12) through the support beam roller (4). The support beam (1) is connected to the walking drive mechanism. The support drive assembly includes a transverse movable part (3), a transverse drive source (2), and a transverse positioning part. The transverse movable part (3) is slidably mounted on the support beam (1) via the transverse drive source (2). The transverse positioning part is used to position the nozzle assembly (8) in the transverse direction. The nozzle assembly (8) includes a first nozzle component (81), which is disposed on the transverse movable component (3) and moves closer to or further away from the cargo hold rib (12) along with the transverse movable component (3); the nozzle of the first nozzle component (81) is inclined and is used to strike and remove rust from the transverse surface (121) and longitudinal surface (122) of the cargo hold rib (12).

3. The rust removal device for cargo hold ribs according to claim 2, characterized in that: The support drive assembly also includes a longitudinal fixing member (5), a longitudinal movable member (6), a longitudinal drive source (7), and a longitudinal positioning roller (11). The end of the longitudinal fixing member (5) is fixedly connected to the transverse movable member (3). The longitudinal movable member (6) is connected to the longitudinal fixing member (5) through the longitudinal drive source (7). The longitudinal positioning roller (11) is set at the end of the longitudinal movable member (6) to position the nozzle assembly (8) in the longitudinal direction. The nozzle assembly (8) also includes a second nozzle component (82), which is disposed on the longitudinal movable component (6) and moves closer to or further away from the cargo hold wall panel (13) along with the longitudinal movable component (6); the nozzle of the second nozzle component (82) is inclined and is used to strike and remove rust from the longitudinal surface (122) of the cargo hold rib (12) and the surface of the cargo hold wall panel (13).

4. The rust removal device for cargo hold ribs according to claim 3, characterized in that: The lateral positioning component includes a lateral positioning rod (9) and a lateral positioning wheel (10). The lateral positioning wheel (10) is located at the end of the lateral positioning rod (9), and the other end of the lateral positioning rod (9) is connected to the longitudinal movable component (6) or the lateral movable component (3). When the transverse positioning wheel (10) contacts the longitudinal surface (122) of the cargo hold rib (12), the distance between the first nozzle (81), the second nozzle (82) and the longitudinal surface (122) of the cargo hold rib (12) is suitable for rust removal by impact.

5. The rust removal device for cargo hold ribs according to claim 3, characterized in that: The first nozzle component (81) and the second nozzle component (82) are arranged in a staggered manner in the vertical direction to reduce the spatial volume of the support drive assembly.

6. The rust removal device for cargo hold ribs according to claim 3, characterized in that: The support drive assembly and the nozzle assembly (8) are each provided in two sets and symmetrically arranged on the support beam (1); when the cargo hold rib plate rust removal device is in operation, the two sets of support drive assemblies and the two sets of nozzle assemblies (8) are located on both sides of the same cargo hold rib plate (12).

7. The rust removal device for cargo hold ribs according to claim 1, characterized in that: The nozzle body (83) has a nozzle inlet (830), the end of the rotating body (85) is connected to the nozzle inlet (830), and the rotating body (85) has a flow channel communicating with the nozzle inlet (830). The nozzle inlet (830) is connected to several nozzles (835) through several nozzle channels (834), and the several nozzle channels (834) are at an angle to the center line of the nozzle body (83).

8. A method for removing rust from cargo hold ribs, characterized in that: The rust removal device for cargo hold ribs according to any one of claims 1-7 comprises the following steps: The walking drive mechanism is in operation, and the walking drive mechanism drives the walking support mechanism to move to the cargo hold rib (12); The walking support mechanism adjusts the position of the nozzle assembly (8) so that the nozzle assembly (8) moves to the rust removal area of ​​the cargo hold rib (12); The nozzle assembly (8) works to strike and remove rust from the rust-removing area of ​​the cargo hold rib (12).

9. The method for removing rust from cargo hold ribs according to claim 8, characterized in that: The walking support mechanism includes a support beam (1) and a support drive assembly. The support drive assembly includes a transverse movable part (3), a transverse drive source (2), a transverse positioning part, a longitudinal fixing part (5), a longitudinal movable part (6), a longitudinal drive source (7), and a longitudinal positioning roller (11). The nozzle assembly (8) includes a first nozzle part (81) disposed on the transverse movable part (3) and a second nozzle part (82) disposed on the longitudinal movable part (6). The steps are as follows: The lateral drive source (2) operates, and the lateral drive source (2) drives the lateral movable part (3) to move along the support beam (1). The first nozzle part (81) moves with the lateral movable part (3). The lateral positioning part positions the first nozzle part (81) in the lateral direction. The first nozzle part (81) operates to strike and remove rust from the lateral surface (121) and longitudinal surface (122) of the cargo hold rib plate (12). After the lateral positioning component positions the first nozzle (81) in the lateral direction, the longitudinal drive source (7) operates, and the longitudinal drive source (7) drives the longitudinal movable component (6) to move relative to the longitudinal fixed component (5). The second nozzle (82) moves with the longitudinal movable component (6). When the longitudinal positioning roller (11) contacts the cargo hold wall panel (13), the second nozzle (82) is positioned in the lateral and longitudinal directions. The second nozzle (82) then strikes the longitudinal surface (122) of the cargo hold rib (12) and the surface of the cargo hold wall panel (13) to remove rust.

10. The method for removing rust from cargo hold ribs according to claim 9, characterized in that: The support drive assembly and the nozzle assembly (8) are each provided in two sets and symmetrically arranged on the support beam (1); when the cargo hold rib plate rust removal device is in operation, the two sets of support drive assemblies and the two sets of nozzle assemblies (8) are located on both sides of the same cargo hold rib plate (12) respectively, and perform synchronous rust removal on both sides of the same cargo hold rib plate (12).

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